.multi-level-container {
  .level-0 {
    margin: 1em;
    padding: 1em;
    background-color: rgba($color: #000000, $alpha: .2);
  }

  .level-1 {
    margin-left: 2em;
  }

  .level-2 {
    margin-left: 3em;
  }

  .level-3 {
    margin-left: 4em;
  }

  .level-row {
    display: flex;
    justify-content: space-between;
  }
}